Nozzle



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E. J. DILLMAN NozzLE Filed May l0, 1935 atented july 12, 1938 NOZZLE`Application May 10, 1935, Serial No. 20,721

7 Claims.

My invention relates generally to nozzles and more particularly to waterdischarge nozzles.

One of the objects of my invention is, to provide a new and improvedwater discharge nozzle of the A type having provision for maintainingthe nozzle discharge orifice free of clogging matter.

Another object of my invention is to provide a liquid discharge nozzlehavingautomatica'lly operable cleaning mechanism for the discharge oriceand to provide novel pressure relief means to release trapped water-inthe nozzle tending to prevent operation of the cleaning mechanism.

Another object of my invention is to provide a durable nozzle structureof the above mentioned character which is emcient in operation andeconomical to manufacture and yet simple in construction both as regardsits parts and their assembly. l

The invention consists in the improved construction and combination ofparts, to be more fully described hereinafter and the novelty of whichwill be particularly pointed out and distinctly claimed.

In the accompanying drawing, to be taken as a part of this specication,I have fully and clearly illustrated a preferred embodiment of my in-lvention, in which drawing- Fig. l is a View showing how myA improvednozzle may be mounted to produce asuitable moisture spray;

Fig. 2 is a view shown in longitudinal section taken centrally throughmy improved liquid discharge nozzle, and

Fig. 3 is a perspective view of my nozzle as seen looking toward thedischarge end thereof.

Referring to the drawing, and more particularly to -Fig, 1, the numeralI designates generally a liquid discharge nozzle mounted on a verticalwall 2 of a receptacle 3, which receptacle has, in the present instance,an angularly disposed baille wall 3B against which the nozzle I isarranged to direct a stream of liquid, indicated at 4, to produce a finesprayr-or mist. Among other uses, the nozzle I, receptacle 2 and baille3a may be employed in a, humidifying apparatus (not shown) forintroducing moisture into air passing through the apparatus, or thenozzle and bale may be arranged with a foodstuff display receptacle forspraying foodstuffs contained therein 30 to keep the same in a freshcondition. In.the present instance, the wall 2 of the receptacle 3 islformed with an apertured boss 5, which is\in ternally threaded and intowhich is screw-threaded one end of a water supply pipe 6. The water 5supply pipe 6 extends through the wall 2 and projects into thereceptacle wherein it is connected to the discharge nozzle I, which, inthe present instance, is supported by the water supply pipe. Thereceptacle 3 is also provided with a drain pipe 6a which opens into thereceptacle 5 through and extends downward from the bottom wall thereof.The nozzle I may be provided with a tubular extending portion l,defining the inlet to the nozzle and which may be kexternally 'threadedfor threading into the water supply pipe 10 6. A suitable tting orpacking nut 'la may be provided to insure a leak-proof connectionbetween the water supply pipe and the nozzle.

Referring now to Fig. 2 in which the construction of the nozzle I isshown, the nozzle 15 includes a sectionally constructed or two-partcasing comprising, in general, a body portion or base member 8 and aremovable end wall cap or closure member 9 therefor which closure memberforms the discharge end of the nozzle casing. 20 One Wall of the body Iis preferably recessed as at ICI and the inner side wall delning therecess is preferably circular in contour and stepped having a portion IIof relatively small diameter which extends outwardly from the recessedwall 25 II)\a relatively short distance to a point from which a portionI2 of relatively large diameter leads out of the body thus forming anoutwardly facing annular shoulder I3. The portion I2, of largerdiameter, may be internally threaded for30 receiving theexternallythreaded closure member 9. The closure member Il extends into theportion I2 of larger diameter and the inner end of the closure memberpreferably has a reduced portion as at |311. Clamped between theshoulder I3 35 and the inner end wall of the removable closure member 9,there is a movable wall means or diaphragm I 4 which is preferably apan-shaped member having al circumferential reinforcing flange I5,preferably, the pan-shaped diaphragm 40 telescopes snugly over the innerreduced end portion I3 of the closure member 9 and is carried thereby.`One side of the diaphragm I4 cooperates with the recessed wall Ill andthe inner side wall portion II, of smaller diameter, to pro- 45 vide achamber I'I. 'I'he inner end wall of the closure member 9 is preferablyrecessed, as at I8, to provide clearance for movement of the diaphragmI4 and to also provide a bearing surface I9 around its periphery forbearing against a 50 marginal edge portion 20 of the diaphragm. 'Iherecessed wall I8 cooperates with the inner side wall, defining therecess, and the adjacent side of the diaphragm I4 to provide a chamber|83. The diaphragm I4 is preferably of the type having 55 a circularlyextending bent portion 2l spaced from the peripheral edge of thediaphragm to provide the marginal bearing portion 26, and which circularbent portion defines a central movable portion or diaphragm proper 22.As is well known in diaphragms of this type, the central movable portion22 is movable without such movement being transmitted to the marginaledge portion 26, such movement taking place in the bent portion 2l andthe diaphragm havinga snap action when moved over center.

The closure member 9 is formed with a protuberance or extension 23,centrally thereof, which extends outwardly and preferably beyond theouter wail 24 of the closure member, as shown. The outer wall of theclosure member 9 is also preferably recessed as at 21, the inner sidewall defining the recess preferably being tapered or flared outwardlyalongits entire periphery for inducing drainage of water therefrom. Apluralityof apertures 26 are provided in the wall 21 and extendtherethrough so that chamber I3 is open to atmosphere to permit escapeof air therefrom which otherwise if, trapped therein would resistoutward movement of the diaphragm I4. The outer side wall of theprotuberance 23 may have a hexagon or other suitable shape for grippingwith a tool, such yas a wrench to assemble and/or dissemble the body Iand closrre member 9.

The protuberance 23 is provided with centrally disposed boreslongitudinally thereof including bore 30, which leads into chamber I6and bore 3I adjacent to and leading out of the outer end of theprotuberance, which bores are separated by an inner transverse wall 32.In the transverse wall 32, there is a centrally disposed aperture 1n theform of a bore 33 which is preferably in'alignment with the center ofthe diaphragmf I4. vCarried by the diaphragm I4 and supported forreciprocal movement in the bored transverse wall 32 of the closuremember 9, there is a tubular member 34. The tubular member 34 has a bore36 leading out of the outer end and a bore 31 leading into chamber I1,the bores being separated by a transverse wall 35 having an aperture 36centrally therethrough constituting the nozzle metering oriiice.Preferably the inner wall of bore 31 tapers to the orifice 36 .as at 38.The tubular member 34 may be xed for movement with the diaphragm I4 inany suitable manner. In the present instance, the tubular member 34 isformed with an external annular flange 40 the inner side of which isarranged to bear against the adjacent side of the diaphragm. Thediaphragm I4 is provided with a central aperture providing opencommunication from chamber I1 through bore 31 and the orifice 36 for theow of Water or other liquid therethrough. The inner end of the tubularmember 34 extends through the central aperture in the diaphragm and is'peened over, as at 4I, to connect the diaphragm and tubular membertogether. Within bore 30 there ls a coil spring 42 having one endbearing against the transverse wall 32 and the other end against theflange. 4II of the tubular member. The spring 42 is held undercompression during flow of water through the nozzle by the force of thewater acting against the diaphragm I4 and expands to move or ilex thediaphragm inwardly upon discontinuance of water ow. g

In coaxial alignment with the orifice 36 and extending from chamber I1out of the rear of the body I, there is a passageway which is formed, inthe present instance, by concentric bores 46,

46 and 41 respectively decreasing in diameter from the outer andrelatively larger bore 45 to the relatively small bore 41 leading intochamber I1. Bore 46, intermediate bores 45 and 41, is internallythreaded to receive an externally threaded portion 50 of a cleanermember, the portion 50 also serving to close the bore 46 to the passageof liquid therethrough to bore 41. An extension portion .5I which may beintegral with the threaded plug 50 is of reduced diameter and extendsthrough the bore 41 into the chamber l1 and is formed with a reducedportion 52 in the form of a pin which extends into bore 31 and is incoaxial alignment or registration with the orifice 36. Preferably theorifice 36 is only slightly larger than the diameter of the cleaning pin52 and if desired, the relative dimensions of the orifice and pin may be.0135 and .012 respectively. The outer and larger bore 45 is provided inthe extension portion 1 to which the water supply pipe is connected andleading from inlet bore 45, and in this instance, from one side thereofor upwardly, there is a bore 53 which connects bore 45 with a relativelylarger bre 54, the latter bore preferably being angularly disposed andleading downwardly into chamber I1. The bore 54 leads out of the bodytoward the rear thereof and is internally. threaded for receiving anexternally threaded closure member or plug 55. The plug 55 is providedwith a central bore 56 longitudinally therethrough from which extendlateral bores 51 connecting bore 56 with an annular chamber 56 formed byan annular slot 59 and the inner wall of bore 54, the annular chamberbeing in communication with bore 53. The outer end of the plug 55 isformed with a ianged head 59 which may be hexagonal or other suitableshape, and between the ilanged head and the body there may be provided awasher 60. On the inner end of the plug, there is car ied a screenmember 6I, the inner end wall of th plug being provided with a circulargroove for receiving the screen member which may be secured therein suchas by means of solder, as at 62.

In the body I, there is provided a by-pass 65 in the form of a borewhich communicates with chamber I1 and leads out of the rear wall of thebody, the bore extending substantially parallel with the central bores45, 46 and 41. The bore 65 is internally threaded to receive anexternally threaded tubular shaped valve seat member 66.

the tubular member 66 having a head or annular flange 61 for abuttingthe recessed wall I0 of the body I. The tubular member 66 has a reducedbore 66 through its head which constitutes the valve seat or port andwhich cooperates with the conical face 10 of a needle valve 1I tocontrol ilow of liquid from chamber I1 through the bypass passageway.Preferably the size of the valve seat and the cooperating conical face10 of the needle valve are made such that the valve projects through thehead of the member 66 and beyond its end wall into chamber I1, the endof the valve being substantially pointed and extending to a point inclose proximity to the diaphragm when the same is in an outwardly flexedposition as shown in Fig. 2.

The needle valve 1I is slldably mounted for reciprocal movement in thetubular valve seat member 66 and may be provided with a number of spacedand longitudinally extending grooves 12 on its outer wall to providepassagewaysffor the passage of water from chamber I1 when the valveagainst its seat or in closed position during discharge of water fromthe nozzle by means of a coil spring 13 under compression. The dischargeend of the by-pass has a reduced bore portion 'l providing an inwardlyfacing shoulder or seat for one end of the spring 13. The valve ll isprovided with a rearwardly extending reduced portion providing anabutment for the other end of spring ll.

The threaded portion 5@ oi the cleaner member may be provided with aslot in its outer end for thev reception of a screw driver which may beinserted in bore d5 and by means of which the cleaner member may berotated and thus be longitudinally adjusted relative to the oiiii'ce 36,as desired. The by-passvalve seat member t6 yalso may be adjustedlongitudinally by rotating the member 66 and by such adjustment thepointed end of the valve may be positioned closer to or farther awayfrom the diaphragm lil as may be desired.

The operation of the nozzle is as follows:

When water or other liquid is not owing through the nozzle, thediaphragm is iiexed inward and the cleaning pin extends into and closesthe orice 36. When the liquid, which may be water, is turned on, itenters the inlet bore d5 from whence it passes through ,bore 53, annularpassage 58, radial bore 5l and into the central bore 56 of the closureplug 55 and then through strainer 6l into chamber ll. 'I'he pressure ofthe water acting against the diaphragm in chamber ll moves or exes thediaphragm outwardly to the position shown in Fig. 2, inwhich positionthe orifice member, carried by the diaphragm is moved relative to thepin so that the orice is open. Water flows from chamber il into bore 3lof the orifice member 36 and through the orice 3G wherein it is meteredand discharged therefrom in a small jet or stream. While water owsthrough the nozzle structure, the diaphragm and oriiice member 3d areheld in the outward position above mentioned and in this position thespring 42 is placed and held under compression having stored therein apotential force tending to return the diaphragm to its normal or inwardposition. Upon discontinuance of water iiow through the nozzlestructure,A the pressure of the water in chamber Il decreases and thespring expands and moves the diaphragm and orifice member toward chamberll. 'The pointed end of the valve 1|, the orifice member 3d and the pin52 are relatively arranged so that .lust before the orifice 36 receivesand is closed by the pin 52, the `diaphragm engages and unseatsthe valve1i. Thus the water that is trapped in chamber l1 and which wouldotherwise prevent inward movement of the diaphragm when the orifice 36is closed is permitted to escape therefrom through the by-pass. Thepressure exerted by the water in chamber l1. opposing inward movement ofthe diaphragm, now being relieved by the opening of the bypass, thediaphragm under the force of the expanding spring moves inwardly withless opposition and aids in expelling the water through the by-pass.AThe by-passed water is discharged from the rear end of the nozzle casingand is caught in the receptacle therebeneath from whence it drainsthrough outlet pipe lia to the sewer. Upon removal or diminishing of theresisting force of th'e water to the inward moverment of the diaphragm,the diaphragm and consequently the orifice member carried thereby canreturn to normalV position and upon doing so the orice 36 is broughtinto the plane of the xed cleaning pin which then extends through theoriiice and dislodges Vany foreign matter which may have collectedtherein.

From the foregoing description it will now be apparent that I haveprovided a new and improved nozzle of the type having provision formaintaining the orifice free of clogging matter. By the provision of aby-pass for the escape of trapped liquid in the nozzle, it will beappreciated that the diaphragm will be permitted to return to normalposition and in so doing effect the cleaning of the nozzle orifice. thatI have provided a discharge nozzle in which the diaphragm, orificemember and the actuator or spring are carried or supported by a readilyrWhat I claim and desire to secure by LettersA Patent of the UnitedStates is:

1. A device of the character described, comprising a body portionthrough which liquid ows and having a recessed wall, a removable wallmeans disposed in said recess, Ya movable wall means clamped between therecessed^wal1 and said removable wall means, and cooperating with `saidrecessed wall to provide a chamber into which liquid flows underpressure for discharge therefrom, said movable wall means having anormal position and being movable .in one direc-` tion by the forceexerted by the liquid, an orice member carried by said movable wallmeans and slidably supported in said removable wall means, a springdisposed in said removable wall means for moving said movable wall meansand orice member back to normal position upon cessation of ow, a cleanermember registering with the oriiice of said orifice member and arrangedto extend thereinto upon return of said movable wall means to normalposition whereby to clear said orifice of 'clogging matter, a by-passfor bypassing liquid from said chamber, and a valve member closing saidby-pass during ow of liquid and movable by movement of said movable wallmeans toward normal position to open said bypass upon cessation of flow.

2. A device of the character described, comprising a casing having an'internal chamber, a pressure responsive movable member sealed along itsmarginal portion to said casing and forming a wall of said chambersaidmember having an opening therethrough, a nozzle member secured to saidmovable member and having a discharge port communicating-with saidopening, said nozzle member having aportion projecting from saidresponsive member, means rigid withsaid casing and having guide meansengaging said projecting.

It will also V,be seen ing portion throughl said port, said responsivemember moving under force of fluid pressure in said chamberin oppositionto said normally acting means to move said port away from said cleaningportion so that fluid can discharge from `prising. a pairof membersrigidly secured and sealedv together, a movable pressure responsivemember within said casing and positioned between said casing members, anozzle element having a bore therethrough, one of said casing membershaving lateral engagement with and supporting said nozzle elementagainst lateral movement, said nozzle element having a portion of itsbore of reduced cross-section to provide a discharge oriiice, asupporting post extending longitudinally of and alined with said bore, acleaning element comprising a rod of reduced cross-section and securedin and projecting from said post in registry with said orice, the otherof said casing members having a relief passageway extending therethroughand leading from the interior of said casing, valve means operable toclose said passageway, one of said elements being rigidly secured to andmovable with said pressure responsive member, said casing having aninlet for supplying fluid under pressure to said orice, and a helicalcoil spring having one end in abutting engagement with one of saidcasing members and having its other end bearing against said responsivemember and being held under compression therebetween to urge the movableone of said elements into cooperable cleaning relation to the other ofsaid elements and to oppose movement of said responsive member by duidpressure, said spring being in concentric alinement with said supportingpost so that lateral thrust of said spring on said responsive member andmovable element will be minimized, said valve means being movable withsaid responsive member so that said valve means will be closed upon suchrelative movement of said elements as will open said oriilce, said valvemeans being moved by said responsive member under force of said springto open said valve means prior to such relative movement of saidelements as will close said orifice.

4. A device of the character described, comprising a casing including apair of body members secured together, one of said members having arecess providing an internal chamber within said casing and having apassageway opening into and for inlet of duid to said chamber, aflexible resilient member positioned within said chamber and sealedalong its peripheral-portion to said casingand forming a wa'll of apressure chamber communicating with said passageway, said dexible memberhaving a central aperture therethrough, the other of said body membershaving a hollow open-ended extension alined with said aperture, saidextension having an internal an-r nular flangeproviding a guide means, anozzle member secured and sealed in said aperture and extending throughand guided in said guide means, a helical coil spring surrounding saidnozzle member and held under compression between said ilange and saidexiblemember to oppose movement of said flexible member by iluidpressure in said pressure chamber, said nozzle member having adischargeoriiice, a supporting member carried by said one body memberand projecting through said pressure chamber toward said oriiice, and arod member of reduced crosssection projecting from said supportingmember in alinement with and for receiving said orice, said flexible.,member being movabie by uid pressure to move said orice out ofsurrounding4 relation to said rod.

5. A device of the character described, comprising a casing having aninternal chamber, a pressure responsive movable member sealed along itsmarginal portion to said casing and forming a wall of said chamber, saidmember having an opening therethrough, a nozzle member secured to saidmovable member and having a discharge lport communicating with saidopening, said nozzle member having a portion projecting from saidresponsive member, means rigid with said casing and'having guide meansengaging said project- Ving portion and holding said nozzle memberagainst lateral movement, a cleaning member secured to said casing andhaving a portion alined with and receiving said port, means normallyacting to move said nozzle member to extend said cleaning portionthrough said port, said responsive member moving under force of uidpressure in said chamber in oppositiontosaid normally acting means tomove said port away from said cleaning portion so that uid can dischargefrom said chamber, means for admission of iluid to said chamber, saidcasing having a relief passageway opening into said chamber andcommunicating with said uid admission means, a valve member in andcontrolling said passageway and having a portion projecting into saidchamber for engagement with said responsive member, and means in lsaidpassageway acting on and urging saidvvalve member toward closedposition, said responsive member acting under iorce of said normallyacting means to engage said valve projecting portion to move said valvemember to open position, said responsive member being movable away fromsaid projecting portion by iiuid pressure so that said last-named meanscan move said valve memberto closed position.

6. A device ofl the character described, comprising a casing including apair of body members secured together, one of said members havlng arecess providing an internal chamber within said casing and having apassageway opening into and for inlet of iluid to said chamber, said onebody member having a relief passageway' therethrough opening into saidrecess and having an internal shoulder, a valve seat member having aport therethrough and secured in the chamber end of said reliefpassageway, a valve member guided in said seat member and having aportion extending through said port, a helical coil spring positionedbetween said valve member and said shoulder and urging said valve memberto its seat on said seat member, a ilexible resilient member positionedwithin said chamber and sealed along its peripheral portion to saidcasing and forming a wall of a pressure chamber communicating with saidmst-named passageway, said ilexible member having a central aperturetherethrough, the other of said body members having a hollow open-endedextension alined with said aperture, said extension having an internalannular flange providing a guide means, a nozzle member secured andsealed in said aperture and extending through and guided in said guidemeans, a helical coil spring surrounding said nozzle member and heldunder compression between said iiange and said ilexif ber carried bysaid one rbody member and pro-- jecting through said pressure chambertoward said orifice, and a rod member of reduced crosssection projectingfrom said supporting member in alinement with and for receiving saidorice, said flexible member being movable by fluid pressure to' movesaid orifice out of surrounding relation to said rod and out of opposingrelation to the projecting portion of said valve member so that saidvalve member spring can act to move said valve member to close saidport.

7. A spray nozzle comprising a base member having a marginal surroundingprojecting ilange, said member having a recess concentric with saidflange, a cap member fitting within said ilange, a resilient ilexiblediaphragm positioned and clamped between said members and cooperatingwith said recess to provide a pressure chamber, said base member havinga bore therethrough concentric with said recess, said diaphragm havingan aperture therethrough alined with said bore, an elongated supportingmember secured in and closing the inner chamber end portion of said boreand extending through said aperture. a

nozzle member secured in and sealing said aperture, said nozzle memberhaving a discharge ing a hollow extension surrounding said nozzlemember, said extension having guide means engaging and holding saidnozzle member against lateral movement, said base member having an inletpassageway leading from said bore and opening into said recess foradmission of iiuid under pressure to said pressure chamber, said basemem-` ber having a relief passageway therethrough opening into saidpressure chamber and having an internal shoulder, a tubular valve seatmember in said relief passageway and having a valve port, a valve memberguided in and extending through said seat member and having a portionoperable to close said port, a helical coil spring positioned in saidrelief passageway and held under compression between said valve memberand said shoulder to urge said valve member portion to closed position,said diaphragm engaging the recess end portion of said valve member, anda spring abutting said guide means and acting on said diaphragm to urgesaid valve member to open position, said diaphragm acting by uidpressure in said chamber to move said oriilce out of surroundingrelation to said cleaning member and to permit said valve member toclose said port, said second-named spring opposing movement of saiddiaphragm and acting to returnsaid nozzle member orice into surroundingrelation to said cleaning member. i

EARN'EST J. DILLMAN.

